Work out 20 kg−13.72 kg20\text{ kg} - 13.72\text{ kg}20 kg−13.72 kg
Practise OCR GCSE Maths Addition and Subtraction with exam-style questions for Foundation and Higher tier. 60 questions, matched to the OCR GCSE Maths (J560) specification and written in the written papers style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.